突发性聋的听力损失和前庭损害对其预后的影响

本文通过对３０例突发性聋患者行纯音听力检查及前庭功能系列检查，比较突发性耳聋听力下降程度和类型与眩晕和前庭功能检查结果的关系、前庭损害类型和程度、以及听力预后与眩晕和前庭损害的关系。得出（１）具有前庭损害的患者９１％为中、重度聋，８２％为平坦型和斜坡型听力损害。半规管麻痹者听力损害全部为中、重度聋，图型为平坦或斜坡型。（２）冷热试验（ＣＰ）值６３％、低频谐波加速试验（ＳＨＡＴ）６６％、重心平衡仪试验（ＶＳＲＺ）３６％呈现异常，以ＳＨＡＴ较为敏感；（３）突聋听力预后与是否伴有眩晕、前庭损害以及损害程度有密切关系。

Hearing Loss and Vestibular Dysfunction Effects on Prognosis of Sudden Deafness

Pure tone audiometry,caloric test,slow sinusoidal harmonic acceleration test(SHAT) and postural sway test were carried out in 30 patients with sudden idiopathic deafness.The results showed;(1)91% of patients with vertigo or vestibular dysfunction had with them hearing loss of moderate to severe degrees,with 82% of their audiograms showing flat or high frequency hearing loss patterns;(2)abnormal result rate was 63% with caloric test,66% with SHAT and 36% with VSRT,with SHAT showing the highest positive rate;(3)prognosis of sudden deafness appears to be closely correlated with presence of vertigo,vestibular impairment and their degrees.